unexpected EOF while parsing

import random
def printIntro():
    print("这个程序模拟两个选手A和B的某种竞技比赛")
    print("程序运行需要A和B的能力值(从0到1之间的小数)")
def getIntputs():
    a = eval(input("请输入选手A的能力值(0-1):"))
    b = eval(input("请输入选手B的能力值(0-1):"))
    n = eval(input("模拟的场次："))
    return a,b,n
def printSummary(winsA,winsB):
    n = winsA + winsB
    print("从分析开始，共模拟{}场比赛".format(n))
    print("选手A获胜{}场，占比{:.1%}".format(winsA,winsA/n))
    print("选手B获胜{}场，占比{:.1%}".format(winsB,winsB/n))
def simNGames(n,probA,probB):
    winsA,winsB = 0,0
    for i in range(n):
        scoreA,scoreB = simOneGame(probA,probB)
        if scoreA > scoreB:
            winsA += 1
        else:
            winsB += 1
        return winsA,winsB
def simOneGame(probA,probB):
    scoreA,scoreB = 0,0
    serving = 'A'
    while not gameover(scoreA,scoreB):
        if serving == 'A':
            if random.random() < probA:
                scoreA +=1
            else:
                serving = 'B'
        else:
            if random.random() < probB:
                scoreB += 1
            else:
                serving = 'A'
    return scoreA,scoreB
def gameover(scoreA,scoreB):
    if scoreA == 15:
        return
    else:
        scoreB == 15
    return

def main():
    printIntro()
    probA,probB,n = getIntputs()
    winsA,winsB = simNGames(n,probA,probB)
    printSummary(winsA,winsB)
main()
这个哪错了，，大佬men

好像gameover函数没有返回值，导致27行的while循环没有终止条件。